/*
 * Copyright 2002-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.web.socket.sockjs;

import org.springframework.core.NestedRuntimeException;
import org.springframework.lang.Nullable;

/**
 * Base class for exceptions raised while processing SockJS HTTP requests.
 *
 * @author Rossen Stoyanchev
 * @since 4.0
 */
@SuppressWarnings("serial")
public class SockJsException extends NestedRuntimeException {

    @Nullable
    private final String sessionId;


    /**
     * Constructor for SockJsException.
     *
     * @param message the exception message
     * @param cause   the root cause
     */
    public SockJsException(String message, @Nullable Throwable cause) {
        this(message, null, cause);
    }

    /**
     * Constructor for SockJsException.
     *
     * @param message   the exception message
     * @param sessionId the SockJS session id
     * @param cause     the root cause
     */
    public SockJsException(String message, @Nullable String sessionId, @Nullable Throwable cause) {
        super(message, cause);
        this.sessionId = sessionId;
    }


    /**
     * Return the SockJS session id.
     */
    @Nullable
    public String getSockJsSessionId() {
        return this.sessionId;
    }

}
